after update to opensuse argon at login virtual keyboard,erro login screen, after login black screen

Hi, on my laptop running 15.4 and KDE after update to opensuse argon after successfull boot, at login I get a full screen virtual keyboard,
when I lower down the virtual keyboard a new kind of login screen (never selected from me) appear
this one
it says this error:

the current theme cannot be loaded due to this error below, please select another theme.
file:///usr/share/sddm/themes/KDE-Story-V2/Main.qml:26:1: plugin cannot be loaded for module
org.kde.plasma.core. Cannot loadlibrary /usr/lib64/qt5/qml/org/kde/plasma/core/ (/usr/lib64/qt5/qml/org/kde/plasma/core/
undefinad symbol: _ZN11PlasmaQuick6Dialog9moveEventEP10MoveEvent)

when I try to insert password by keyboard the full screen virtual keyboard appear again,
I insert password and the login seems to works becouse appear the opensuse lamp and gear,
after the login I have a black screen with working cursor,
I can ctrl>alt>F2 and login as root and shutdown -r now,
selecting LXDE in the high left corner I can correctly login with LXDE,

how can I correctly login in my KDE desktop?

Seems that your update was incomplete. Repeat the update.

manythanks, I repeated the update and now everthying works fine